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In this section we have spot diagnoses posted on a daily basis since June 2010, now over 1700! You can review the archived cases and read the suggested diagnoses by users and the final comment by Dr Uma Sundram, the Editor-in-Chief and main spot diagnosis host. Case are uploaded each week day by 10 a.m. UK time with the correct diagnosis will generally be posted at 8 p.m. UK time. Why not view the most recent spot diagnosis and proffer a diagnosis?

Case Number : Case 2289 - 22 March 2019 Posted By: Dr. Richard Carr

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
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F60. Lower leg. Unusual mole, 4 x 4mm, irregular edge, irregular pigment


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vincenzo

Posted (edited)

Granular cell BCC

Edited by vincenzo

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Anil Patki

Posted

In figure 5, there are squamoid cells with attempted horn pearl formation. This suggests basosquamous carcinoma or basaloid SCC. 

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Krishnakumar subramanian

Posted

collision tumor

BCC and SCC

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Alex-Ventura-Leon

Posted

I see a clearly BCC at the left edge of fig1, then in the middle, I think that is an SCC probably of follicular origin.

So agree with the idea of a collision tumor

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interesting pattern with features of metatypical BCC, the cytoplasm is very GRANULAR, so maybe can call it as Vincenzo suggested. 

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Krishnakumar subramanian

Posted

sir what is the final diagnosis

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Dr. Richard Carr

Posted

Superficial basal cell carcinoma with granular cell change.

Apologies for delay.

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